Surname ธรรมนิตยกุล (ธรรมนิตยกุล 
, Dhamanitayakul , Thummanittayakul ) , in all the world, is a rare family name. The family name ธรรมนิตยกุล is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| ธรรมนิตยกุล, Thammanitayakul, Dhamanitayakul, Thummanittayakul | Thailand |